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I'm done with heart rate monitor chest straps
I used to use the Polar H10 chest strap for testing smartwatches' OHR accuracy. Here's why I'm switching to an arm strap.
Someone reposted the article on r/GalaxyWatch on Reddit, and the responses ranged from calling the test "kinda pointless" because I didn't use a chest strap to "Trusting Android Central to do a fitness device review? Any fitness smartwatch or tracker, smart ring, or armband uses LEDs to illuminate your skin and photodiodes to catch the reflected light, visually tracking changes in your pulse. I knew something was off during my first run, even with my phone in my pocket, because Polar Beat kept alternating audio cues for "improving fitness" and "burning fat," as if I was rapidly changing my heart rate and pace.
Or read this on Android Central